Golf-ball.



Patented May 247,i |902.

.5'. KEMPSHALL.

GOLF BALL.

#Appncaion mea Apr. 1e, i902.)

(No Modl.)

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Unitime Srarns,

PATENT OFFICE.

ELEAZER KEMPSHALL, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE KEMPSIIALL MANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY.

GOLF-BALL.

SPECIFICATION forming part of Letters Patent No. 700,943, dated May 27, 1902.

Application led April 16. 1902. Serial No. 103,220. (No model.)

To all whom it may concern.-

Beit known that l, ELEAZER KEMPSHALL, a citizen of the United States, residingin Boston, in the county of Suffolk and State of Mas` sachusetts, have invented certain new and useful Improvements in Golf-Balls, of which the following is a specification.

This invention relates to balls such as used in golf and other games; and its object is to increase the efficiency and durability While reducing the cost of the ball.

In the drawings forming a part Vof this specification, Figure l is a View, partlyin section, of my improved ball. Fig. 2 illustrates a stage in the process of manufacturing the ball. Fig. Sillustrates asection of tape such as I preferably use in constructing the ball. Fig. a illustrates the final stage in its manufacture.

In the several views similar parts are designated by similar characters of reference.

I preferably use a sphere A, Fig. 2, of uncured or partially-cured rubber, and over this I wind somewhat loosely and continuously in different directions a tape B, so as to form a jacket upon said uncuredrubber sphere.

Over the ball thus formed I place plastic ma-A terial, such as gutta-percha or Celluloid, preferably the latter, Wherewith to form a hard shell. This material may be applied in the form of cups C and D, Which mayhave over` lapping, telescopic, or lap-jointed rims, as at- D. The ball thus assembled I place Vin a mold consisting of parts E and F, the ball being preferably somewhat undcrsize,'so that it may slip readily into the mold; I then heat the mold to an extent to cure the soft-rubber core A. In curing said core expands and swells the fabric jacket B and also forces the celluloid shell-casing outwardly, causing it to t the mold, and especially the pits G therein, whereby the ball may be brambled or otherwise embossed. The size of the original rubber sphere A is such and the other parts are so proportioned that the described expansion of the rubber in the core causes the ball to fill the mold, subjects the celluloid evenly and radially to high compression between the rubberaud the Walls of the mold, causes the fabric envelop B to become embedded in the celluloid,and preferably also puts the rubber core A itself in a state of compression within its confines, or, in other Words, a surplus of rubbermay be employed, the e ffect of confining Which within a shell is to give it a permanent tendency to rupture the shell; and since theA mold is allowed to cool While the ball is confined therein the celluloid hardens, and therefore is enabled to restrain the core or hold it in a state of permanent compression. If desired, a vent at H may be provided in the mold, soy as to prevent rupture thereof and also to regulate the degree of compression attained by the softrubber core' A.

The deeply-overlappingshell-cups at D' may be so welded and compacted by the expansive action of the rubber as it cures as to form a practically continuous or unjointed shell all over the ball, Which is a desideratum, since the liability of the same to become ruptured when subjected to severe usage is minimized.

The threads of the tape preferably extend diagonally, as at B', so as to enable the tape to stretch somewhat as the rubber core confined therein expands. l

It will beseen that as a result of confining the core'the latter tends to assume a true spherical form and to become accurately centered Within the complete distended shell C of celluloid or gutta-percha.

Variations may be resorted to within the scope of my invention.

Having described my invention, I claiml. A playing-ball comprising a soft-rubber sphere and a shell of plastic material thereon, strips of fabric extending continuously around said sphere in different directions and being vulcanized thereto and said rubber sphere being held under compression by said fabric strips and shell.

2. A playingball comprising a soft-rubber sphere and a shell of celluloid thereon, strips of fabric extending continuously around said sphere in different directions and beiugvulsphere being held under compression by said fabric strips and shell, the threads of said fab- 1o ric strips extending diagonally of said strips.

ELEAZER KEMPSHALL.

Witnesses:

B. C. STICKNEY, JOHN O.-SE1FERT. 

